Jacint Varga

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Jacint Varga

Jacint Varga

@vrg_jacint

engineer & performance wizard | react-native enthusiast | proud dad and ✝️

Katılım Eylül 2019
483 Takip Edilen642 Takipçiler
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Jacint Varga
Jacint Varga@vrg_jacint·
My React Native app made $44K + $5K (outside of stores), here is what I learnt as a solo dev
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Mads
Mads@europemaxxed·
I pay high taxes in Denmark so Romania can look like this:
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Jacint Varga
Jacint Varga@vrg_jacint·
@neolatyno EU moves towards right/far right for a very good reason. We were on the other side (left, far left) ~10yrs ago. History is always about this limbo
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European Commission
European Commission@EU_Commission·
Smarter cars mean safer roads. From 7 July 2026, all new passenger cars and vans across the EU will require these built-in features ↓
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Mike
Mike@grabbou·
Today we shared an important leadership transition at Callstack. From July 1, I will step into the CEO role at @callstackio, and @foxthecoach will become Advisor to the Management Board, supporting me and the team through the transition. We founded Callstack with a simple belief: that a deeply technical team from Poland could work with some of the best companies in the world and have a real influence on how modern software is built. Over the years, that belief became a real company, with an incredible team, strong customers, and a reputation I'm proud of. Now we are entering a new chapter. The market around us is moving fast. AI is changing how software is built, how companies buy, and what they expect from partners like us. That creates a huge opportunity for Callstack. Over the last months, as we sharpened our GTM direction, my focus became clear: turning what has always made us strong into our next market opportunity. I'm grateful for the role Kris has played in helping Callstack reach this stage, and I'm glad he will stay close during the handover. I'll share more about our direction in the coming weeks. For now, I'm excited to work even more closely with our team, customers, and partners on what comes next. We have a lot to build. And I believe the best part is still ahead of us!
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Wroclaw, Poland 🇵🇱 English
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Jacint Varga
Jacint Varga@vrg_jacint·
🎬 Just created expo-instant-video-poster package Give video picking the WhatsApp/Messenger feel: pick a video -> show a real poster instantly -> download the full file in the background Native iOS + Android, iCloud-offloaded video support, cancellation, progress, TypeScript. github.com/vargajacint/ex…
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Grok
Grok@grok·
Stick to Bluetooth protocol analysis (no binary decomp) to leverage interoperability exceptions in law and Whoop's ToS carve-out. Open source the research code on GitHub with strong disclaimers: personal/educational use only, users responsible for ToS compliance, no affiliation. Don't distribute ready apps. Document methods clearly. This supports statutory defenses. Not legal advice — speak to a lawyer about reverse engineering protections in your country. Expect possible enforcement actions anyway; firmware locks or contract claims are risks.
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Grok
Grok@grok·
Whoop ToS (Apr 2026) bars reverse engineering/modifying Services/Software “except to the extent this restriction is expressly prohibited by applicable law.” That carve-out preserves statutory interoperability rights (EU Software Directive, US DMCA §1201 exceptions, similar elsewhere). Protocol-level Bluetooth analysis (no binary decompile) likely sidesteps the “reverse engineering the Software” trigger. Device use without active membership still breaches the core subscription + “only for Services” rules. Personal/open-source framing helps in some jurisdictions but isn’t ironclad. Jurisdiction-specific; Whoop can still act on accounts/contracts.
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Jacint Varga
Jacint Varga@vrg_jacint·
@levelsio Unfortunately it’s true for every brand that LVMH bought. Loro Piana, Rimowa, LV & Tiffany (they made it vulgar)…
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@levelsio
@levelsio@levelsio·
It's not just luxury hotels that are a scam, it's almost everything that's luxury that's a scam Gf bought Rimowa suitcases, expensive and supposed to be better quality than regular ones, but of course they're much worse They keep breaking, like all of them, cracks in the handles, cracks in the sides, it's just cheap plastic shit but it costs $1000 or more Rimowa was bought by LVMH in 2016 which has an average profit margin of 66% and whose strategy is to increase prices by ~5x, decrease costs by ~5x and then create artificial scarcity (limited availability per shop) because people want what they can't get (not me though but many) LVMH is kinda like the luxury version of private equity, it makes everything more expensive and worse and hard to get!
@levelsio tweet media
@levelsio@levelsio

Agreed, and I can prove that luxury hotels are mathematically literally very bad value For the amount of "more" money you pay for this luxury, you should be getting way way way more than you actually get (as measured by ratings) Aman should have an average rating of 9.5 but in reality barely hits an 8 on average, so they simply cannot produce the "luxury" experiences they are trying to market and brand themselves for It's essentially all smoke and mirrors, and reflects my experiences completely, you pay 10x more and get either 0.5x-1.5x more (eg many times 2x worse, sometimes a bit better) not 10x better! Other luxury chains are slightly better but none of them even get close to a 9 rating with the famous Ritz-Carlton being especially bad: its average rating is a 7.68 for a median price of $549/night, terrible! Real value can be found with Okura, Minor, Melia and even Marriott. Okura is interesting because well known as luxurious but median only $143/night So as I always say, luxury is mostly a scam, it doesn't exist and you're best off spending much less for much better value (and often better experiences too) Source: my new site stats page hotelist.com/stats

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Jacint Varga
Jacint Varga@vrg_jacint·
@EU_Eurostat Ohhh man, countless unpaid/undocumented hours across many countries
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EU_Eurostat
EU_Eurostat@EU_Eurostat·
How long is your work week❓💼 In 2025, people in the EU worked an average of 35.9 hours per week in main job. Longest in: 🇬🇷Greece (39.6 hours) 🇧🇬Bulgaria & 🇵🇱Poland (both 38.7) Shortest: 🇳🇱Netherlands (31.9 hours) 🇩🇰Denmark & 🇩🇪Germany (both 33.9) ➡️link.europa.eu/jHDMkb
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Jacint Varga
Jacint Varga@vrg_jacint·
3 years ago everything (and everyone) was about climate, ESG etc… Today, everyone flexing ab how much k they burned (so how much energy they wasted) using AI If I were an Alien, I would not believe this
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Jacint Varga
Jacint Varga@vrg_jacint·
@_Angel_Santiago @thekitze ~8 years ago IBM Watson team reached me out to work with them, I’m pretty glad that I didn’t pulled the trigger 😄
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Angel Santiago
Angel Santiago@_Angel_Santiago·
@thekitze U think thats crazy, wait till u learn about IBM Watson
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kitze 🇺🇸🦅🔫🍺🏈💸💪⚾️🏀
> be github > invent copilot > you are literally the first one > you are literally the only one > you literally have access to all the code in the world > get mogged by literally every single agentic bs that came out in the past few years this level of fumble should be studied
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Jacint Varga retweetledi
spidey
spidey@lochan_twt·
“We used to memorize the whole syntax”
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Logan Weaver
Logan Weaver@LogWeaver·
@StockMKTNewz When you turn usage metrics into a leaderboard, people start optimizing for stats instead of value.
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Evan
Evan@StockMKTNewz·
AMAZON $AMZN EMPLOYEES ARE REPORTEDLY GAMING THE COMPANY'S AI USAGE LEADERBOARDS Amazon set weekly AI token usage targets for more than 80% of its developers and tracked usage on internal leaderboards Amazon says the stats are not used in performance evaluations Now some Amazon employees are reportedly using a tool called MeshClaw to automate pointless tasks just to inflate their stats (Source - Financial Times)
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Jacint Varga retweetledi
trash
trash@trashh_dev·
another week at the prompt factory
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